Road-scraper.



A. MGGALLUM.

ROAD SGRAPER.

APPLICATION FILED DEO.13,1913.

1,1 12,71 3. Patented Oct. 6, 1914.

a k J h 22 14 WITNESSES INVEHTOR ANGUS McCALLUM, or immune, mionreanfRoan-semen.

Specification of Letters Patent.

To all whom it may concern Be it known that I, ANGUS 'MCCALLUM, acitizen of the United States, residing at Pontiac, county of Oakland,State of Michigan, have invented a certain new and-useful Improvem entin Road-Scrapers, and declare the following to be a full, clear, andexact description of the same, such as will enable others skilledin theart to which it pertains to make and use the same, reference being hadto the accompanying drawings, which form a part of this specification.

This invention relates to machines for evening roads and has for itsobject a machine which is adapted to perform its work in a good andeflicient manner by reason of the particular disposition of the blades.The middle blade is adjustable vertically and the depth of its out maybe regulated by the swinging of the rear blade. This will more fullyappear in the specification.

In the drawings :Figure 1, is a topplan view of thescrapersand theframe. Fig. 2, is a side view of the same. Fig. 3, is a detail of thecontrol device for regulating the adjustmentof the rear blade- Fig. 4,is a detail of the fastening of the middle blade to the frame. Fig. 5,is a detail of that part of the chain omitted from the right of Fig. 1.

A pair of parallel side bars a are fastened together by the braces Z). Afront blade 0 is diagonally set upon the front ends of the side bars.aa.. The. middle blade d is set perpendicularly with respect to the sidebars to which it is attached .by means of the hangers e. The middleblades are slotted as at 1 so that they may be adjusted slightlyvertically with respect to the hangers by loosening the bolt 9. Themiddle blade or scraper is concave on its forward side, the concavitybeing of uniform character at the top and bottom so that the scraper canbe inverted and used with the top edge at the bottom whendesirable. Therear blade it has its edge z turned rearwardly so as to ride. over theroad already cut by the middle scraper. The rear blade is fastened. tothe hangers j that are pivoted to the side bars. The lever k is alsofastened to the rear blade and swings across the face of a perforatedsegment Z. A locking pawl m is pivoted so as to swing transversely ofthe lever and has a point adapted to drop into the perforations inthesegment I so that the blade it may be held in different inclinations.A chain at is attached to each end of the side bars at the front and maybe connected with any suitable means for pulling.

The obliquely set front blade 0 is intended to throw to the sides of themachine any surplus accumulations of dirt and other mat- Patented Oct.6, 1914.- Application filed December 13, 1913.' Serial No. 8 0 6 ,377.

ter a'lo-ngthe surface of the road. It also better than would be thecase if it were obliquely set. It carries'the dirt along in front of itand allows it to drop into low.

places. 1 a

By dropping the lever m the blade 11. may be inclined with respect tothe ground and the more the lever is dropped the deeper the middle bladecl will cut. The turned-over edge 21 of the blade It acts to smooth offthe portions of the road that have been cut by the scraper and portionsof the road that have been filled in by the same. It, therefore,performs a double function as a control for the scraper and as anevener.

What I claim is v 1. A machine for eveningroads, having in combination,a frame, a front blade that'con tacts the ground and that is carried bythe frame, a middle blade carried by the frame, a rear blade or dragthat is arranged to ride over theground without cutting the same, thesaid rear blade being pivoted near its upper edge to the frame, and alever pivotally mounted. upon the frame and connected with the rearblade so as to tip only the'rear blade when operated, the said rearblade being set with respect to the other two blades so that the tippingof the rear blade raises or lowers the frame upon the front blade as afulcrum, thereby regulating the-cut of the middle blade.

. 2. A machine for evening roads, having in combination, a frame, afront blade that contacts the ground and that is carried by the frame, amiddle blade acting as a cutting blade and carried by the frame, a rearblade arranged to slide over the ground without cutting into the same,hangersattached to the rear blade and pivoted to the frame so as tocarry the point of pivoting above the upper edge of the rear blade, anda lever atfulcrum, so as to regulate the cut of the tached to one of thehangers and fixalole in middle blade. 10 various angular positions Withrespect to In testimony whereof, I sign this specifithe frame upon whichit is pivoted, said rear cation in the presence of two Witnesses.

blade being arranged With respect to the ANGUS MOCALLUM. middle andfront blade so that tipping of l Vitnessesz the rear blade by operatingthe lever raises STUART C. BARNES? or lowers the frame on the frontblade as a MARIETTA E, RUDD.

